Probably 50/50 over the long term, but I'm usually either in a mostly-design mode or a mostly-coding mode. If in design mode, I'm spending 1/3 of the time doing

Probably 50/50 over the long term, but I'm usually either in a mostly-design mode or a mostly-coding mode. If in design mode, I'm spending 1/3 of the time doing productive work, and the rest procrastinating. If in coding mode, I'm spending 8-12 hours a day head-down writing code, with small breaks to step back a bit and think.